/**
 * Copyright (c) 2015-2018, Golly Hu 胡高 (3722711@qq.com).
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cn.hg.jfsa.web.directive.news;

import cn.hg.base.jfinal.directive.BaseDirective;
import cn.hg.base.jfinal.directive.annotation.JfsaDirective;
import cn.hg.jfsa.core.ControllerThreadLocal;
import cn.hg.jfsa.model.News;
import cn.hg.jfsa.web.service.api.NewsServiceApi;
import cn.hg.jfsa.web.service.provider.NewsServiceProvider;
import com.jfinal.aop.Aop;
import com.jfinal.core.Controller;
import com.jfinal.plugin.activerecord.Page;
import com.jfinal.plugin.ehcache.CacheKit;
import com.jfinal.plugin.ehcache.IDataLoader;
import com.jfinal.template.Env;
import com.jfinal.template.io.Writer;
import com.jfinal.template.stat.Scope;

import java.util.Map;

/**
 * @author Golly
 *
 */
@JfsaDirective("newsPage")
public class NewsPageDirective extends BaseDirective {

	private NewsServiceApi getNewsService() {
		return (NewsServiceApi) Aop.get(NewsServiceProvider.class);
	}

	/*
	 * (non-Javadoc)
	 *
	 * @see
	 * cn.hg.base.jfinal.directive.BaseDirective#onRender(com.jfinal.template.Env,
	 * com.jfinal.template.stat.Scope, com.jfinal.template.io.Writer)
	 */
	@Override
	public void onRender(Env env, Scope scope, Writer writer) {
		Controller c = ControllerThreadLocal.get();

		int pageNumber = this.getPara("pageNumber", scope, c.getParaToInt("pageNumber", 1));
		int pageSize = this.getPara("pageSize", scope, c.getParaToInt("pageSize", 10));

		Map<String, Object> paraMap = this.getAssignedParaMap(scope);
		paraMap.put("pageNumber", pageNumber);
		paraMap.put("pageSize", pageSize);

		Page<News> page = CacheKit.get("news", "newsPage_" + paraMap.toString(), new IDataLoader() {
			@Override
			public Object load() {
				return getNewsService().getNewsPage(pageNumber, pageSize, paraMap);
			}
		});
		scope.setLocal("newsPage", page);

		renderBody(env, scope, writer);
	}

	@Override
	public boolean hasEnd() {
		return true;
	}
}
